Practical experiences by use of specific calibration and release strategies with in situ clearance measurements of VAK buildings and concrete structures

Based on extensive experiences with the in situ measurement system in the past VAK now follows an expert-qualified calibration and release strategy witch is available for collimated in situ decision measurements at plane concrete structures with the aim of unrestricted release of regulatory control after authority inspection. Major objects of this report are the qualification procedure and practical experiences during routine operation as well as the documentation of the measurement results. (orig.)